Threats Tagged 'cve-2026-20249'

A logic error in the certification authentication feature of IKEv2 on Cisco Secure Firewall ASA and FTD software allows an unauthenticated remote attacker to cause the device to reload unexpectedly. Exploitation involves sending a crafted certificate during the IKEv2 VPN connection setup, leading to a denial of service by crashing the IKEv2 process.

A vulnerability in the certification authentication feature of Internet Key Exchange version 2 (IKEv2) for Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause an affected device to reload unexpectedly. This vulnerability is due to a logic error during the certificate authentication phase of the IKEv2 connection setup. An attacker could exploit this vulnerability by attempting to establish an IKEv2 VPN connection with a crafted certificate. A successful exploit could allow the attacker to cause the IKEv2 process to crash, causing a denial of service (DoS) condition.